JP3241221B2 - Packaging box - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a packaging box suitable for packaging photosensitive materials such as photosensitive paper and photographic film.

[0002]

2. Description of the Related Art Conventionally, there is a packaging box for photosensitive material as shown in FIGS.

This device comprises a body box 1 and a lid box 2 which is put on the outer surface of the body box 1, and two parallel parallel members which cross the lower half of one side wall 3 of the lid box 2 in the left-right direction. By folding back outwardly by the fold line 4 and attaching the lower half of the side wall 3 of the foldable lid box 2 to the outer surface of the lower half of the side wall 5 of the body box 1, the body box 1 and the lid box 2 is connected.

In the packaging box having the above structure, the side wall 5 of the body box 1 and a part of the side wall 3 of the lid box 2 are connected to each other.
The lid box 2 can be opened and closed by using the fold line 4 formed in the lower half of the box as a hinge. Is good.

[0005]

However, in the packaging box having the above structure, the body box 1 and the lid box 2, the lower half of the side wall 3 of the lid box 2, and the lower half of the side wall 5 of the body box 1 are arranged. Since the connection is made by pasting to the outer surface, it takes a lot of time to paste, and when the body box 1 and the lid box 2 are pasted and connected, there is a problem that it is difficult to disassemble when disposing after use. is there.

[0006] Therefore, the present invention provides a good light-shielding property in which the body box and the lid box can be connected without bonding.
The purpose of the present invention is to provide a packaging box of photosensitive material to be kept .

[0007]

SUMMARY OF THE INVENTION In order to solve the above-mentioned problems, the present invention provides a body box having a pair of side walls and a pair of end walls formed on four sides of a rectangular bottom wall; On the four sides of the wall,
A pair of side walls and a pair of end walls are formed, and a lid box is provided on the outer surface of the body box. At least a lower half of one side wall of the lid box is folded outward by a fold line crossing in the left-right direction. In the packaging box for photosensitive material, the lower half of the side wall of the lid box is connected to the lower half of the side wall of the body box.
The end wall of the body box has a double wall structure of an outer plate and an inner plate, and is sandwiched between the inner plate and the outer plate forming the end wall of the body box on both sides of the side wall of the body box. Flaps,
In a state where the lid box is placed on the body box on both sides of the lower half that can be folded outward on the side wall of the lid box, between the inner plate and the outer plate forming the end wall of the body box. A connecting flap to be inserted was formed, and connecting means were formed at the tip of the connecting flap and the tip of the flap of the body box. As the above-mentioned connecting means, hooking by hooks, fitting of unevenness or hook shape can be used.

[0008]

According to the above construction, the connection between the body box and the lid box is performed by bonding the flap of the body box sandwiched between the inner surface plate and the outer surface plate forming the end wall of the body box, regardless of the bonding. This can be done by the connecting means of the connecting flap of the lid box.

[0009]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS An embodiment of the present invention will be described below with reference to FIGS.

[0010] The packaging box of the present invention comprises a body box 10 and a lid box 30 which is put on the outer surface of the body box 10.

The body box 10 is assembled by folding a paperboard such as a corrugated cardboard shown in a development view of FIG.

The body box 10 comprises a rectangular bottom wall 11, a pair of side walls 12 and a pair of end walls 13 provided to stand upright on four sides of the bottom wall 11.

The side wall 12 of the body box 10 has a double wall structure, and is formed on an outer side plate 12a continuous with a rectangular bottom wall 11 via a fold line on an opposite side, and is folded on an inner side thereof. And an inner surface plate 12b to be overlaid.

The end wall 13 of the body box 10 also has a double-walled structure. An outer surface plate 13a is provided on the other side of the rectangular bottom wall 11 via a fold line. Face plate 13
outer surface plate 13a connected to the upper side of line a through a fold line
And an inner surface plate 13b that is folded over on the inner surface side.

On both sides of the inner plate 12b forming the side wall 12, the inner plate 13b forming the end wall 13 and the outer plate 1 are formed.
An inner flap 14 sandwiched between the inner flap 3a and the inner flap 3a is continuously provided via a fold line. The inner flaps 14 connected to the opposing side walls 12 are formed so that the tips thereof overlap each other, and hook portions 15 which are hooked to each other are formed in the overlapping portions.

One outer surface plate 12 forming the side wall 12
Outer flaps 17 sandwiched between an inner plate 13b and an outer plate 13a forming the end wall 13 and overlapping the outer surface of the inner flap 14 are formed on both sides of "a". A hook portion 18 is formed at the tip of the outer flap 17. In this embodiment, the outer flap 17 is not provided on the other outer plate 12a, but the outer flap 17 may be provided on the other outer plate 12a. Although the outer flap 17 is not necessarily provided, the provision of the outer flap 17 has an advantage that the light shielding property is improved.

Both sides of the upper side of the inner side plate 12b which is folded on the inner side of the other outer side panel 12a having no outer flap 17 and the upper side of the inner side flap 14 provided on both sides of the inner side plate 12b. At the end on the side of the inner plate 12b, there is formed a right-angle corner projection 19 projecting above the upper side of the inner plate 12b and the inner flap 14. In addition, the end wall 13
At one end of a fold line between the outer surface plate 13a and the inner surface plate 13b, a notch is formed such that a corner projection 19 formed on the upper side of the inner flap 14 projects above the upper side of the end wall 13. 20 are formed. This corner projection 19
Is formed on both sides of the other outer plate 12a with an outer flap 17 sandwiched between the inner plate 13b and the outer plate 13a of the end wall 13, and the upper side of the outer flap 17 and the corner portion of the upper side of the outer plate 12a. May be provided.

At the lower ends of both sides of the inner plate 13b forming the end wall 13, locking portions 21 projecting sideways are formed, and the lower ends of the fold lines on both sides of the inner plate 12b forming the side wall 12 are formed. In addition, a cut 22 into which the locking portion 21 fits is formed. A finger hook 23 is formed at the center of the lower side of the inner surface plate 13b forming the end wall 13.

The body box 10 constructed as described above is assembled as follows.

First, after the inner plate 12b is folded on the inner surface of the outer plate 12a forming the side wall 12, the inner plate 12b is erected at right angles to the bottom wall 11.
Of the inner flaps 14 on both sides of the
Hook portions 15 at the tips of the above are hooked to each other. Then, after the outer flaps 17 provided on both sides of one outer face plate 12 a of the side wall 12 are folded on the outer face of the inner flap 14, the outer face plate 13 a forming the end wall 13 is attached to the bottom wall 11. The inner flap 1b of the side wall 12 is erected at a right angle, and the inner flap 13b connected to the upper side of the outer flap 13a is folded inward.
4 and the outer flap 17, and the locking portions 21 at the lower ends on both sides of the inner surface plate 13 b are engaged with the inner surface plate 12 forming the side wall 12.
b into the notch 22 at the lower end of both sides,
0 is completed. However, the inner plate 13b and the outer plate 13a forming the end wall 13 are bent by the side wall 12
Is performed after the lid box 30 is connected to the outer flap 17. This will be described later.

Next, the lid box 30 is shown in a development view of FIG.
It can be assembled by folding paperboard such as cardboard.

The lid box 30 includes a rectangular top wall 31 and a pair of side walls 32 and a pair of end walls 33 provided at right angles to four sides of the top wall 31.

One of the pair of side walls 32 of the lid box 30 has a double wall structure, and an outer panel 32a connected to one side of the top wall 31 via a fold line, The outer plate 3 continuously connected to the lower side of the outer plate 32a via a fold line.
2a and an inner surface plate 32b folded on the inner surface side. On the lower side of the inner surface plate 32b, a ceiling wall inner plate 34 that is folded on the inner surface of the ceiling wall 31 is continuously provided via a fold line. At the center of the fold line provided between the outer plate 32a and the inner plate 32b, a finger hook 35 is formed by a through hole. As shown in FIGS. 6 and 7, the top wall inner plate 34 has both side corners at the distal end side thereof.
In a state where the lid box 30 is put on the body box 10, a notch portion 36 is formed in which the corner projection 19 provided on the upper side of one side wall 12 and the upper side of the end wall 13 of the body box 10 fits. When the corner projection 19 of the body box 10 fits into the notch 36 of the top wall inner plate 34 of the lid box 30,
There is an advantage that the light shielding property is improved. Note that the top wall inner plate 34 may be continuously provided on the side of an inner surface plate 33b of the end wall 33 described later.

The other side wall 32 of the lid box 30 is
1 is connected to the other side via a fold line.
The lower half portion 37 of the side wall 32 is formed so as to be outwardly foldable by two parallel fold lines 38 and 39 crossing in the left-right direction.

The end wall 33 of the lid box 30 has a double wall structure. An outer plate 33a is provided on both ends of the top wall 31 via a fold line, and a fold is formed on the lower side of the outer plate 33a. An inner plate 33b is provided on the inner surface of the outer plate 33a. A finger hook 40 is formed at the center of the lower side of the inner panel 33b. A locking portion 4 projecting downward is provided on both sides of the finger hook portion 40.
1 are formed, and the locking portions 41 are fitted into cutout portions 42 formed on both sides of the top wall inner plate 34. At the lower end of one side of the inner surface plate 33b, a locking portion 43 protruding sideward is formed, and the side wall 3 of the double wall structure is formed.
At the lower end of both sides of the inner surface plate 32b forming the second part 2, a notch part 44 into which the locking part 43 fits is formed.

On both sides of the outer panel 32a forming the side wall 32 of the double-walled structure, the outer panel 33 forming the end wall 33 is provided.
An inner flap 45 sandwiched between a and the inner surface plate 33b is continuously provided via a fold line.

Side wall 3 formed so as to be able to be folded outward
A connecting flap 46 is formed on both sides of the lower half 37 of the second box 2 so as to be folded outward through a fold line. The outer end of the connecting flap 46 has an outer flap 17 extending from the side wall 12 of the body box 10. A hook portion 47 is formed to be hooked on the hook portion 18 at the tip of the hook.

The side wall 32 having the connecting flap 46 is bent inward on both sides of the upper part of the upper fold line 39 of the two parallel fold lines 38 and 39 through the fold line. Outer plate 33a forming end wall 33
Flap 4 to be inserted between the inner plate 33b
The insertion flaps 48 are formed so as to fit into the cut-out portions 49 of the inner flaps 45 provided on both sides of the outer face plate 32a of the side wall 32 of the double wall structure. Although the insertion flap 48 is not necessarily provided, when the insertion flap 48 is formed, a corner wall is formed between the side wall 32 and the top wall 31 which are formed so as to be turnable. Is improved in light-shielding properties.

The lid box 30 constructed as described above is assembled in the following manner and connected to the body box 10.

First, after the outer plate 32a forming the side wall 32 of the double wall structure is bent at a right angle to the top wall 31, the inner plate 32b is bent and folded on the inner surface of the outer plate 32a. The wall inner plate 34 is folded on the inner surface of the top wall 31. Next, the inner flaps 45 on both sides of the outer panel 32a are bent along the both sides of the top wall 31, and the insertion flaps 48 at the upper ends on both sides of the other side wall 32 are connected to the inner flaps 4.
After being bent so as to fit into the notch portion 5 of FIG. 5, the outer plate 33a and the inner plate 33b forming the end wall 33 are sequentially bent to form the inner flap 45 and the insertion flap 48.
Is sandwiched between the outer plate 33a and the inner plate 33b, the locking portion 41 on the lower side of the inner plate 33b is fitted into the cutout portion 42 of the top wall inner plate 34, and the lateral locking of the inner plate 33b is performed. The notch 4 of the inner surface plate 32b forming the side wall 32
Fit into 4.

As shown in FIGS. 3 and 4, the lower half 37 of the side wall 32 of the lid box 30 which can be folded outward is folded outward by two fold lines 38 and 39. The connecting flaps 46 on both sides thereof are bent at right angles to the lower half portion 37, and the hook portions 47 at the tips of the connecting flaps 46 are folded before the outer plate 13 a and the inner plate 13 b forming the end wall 13 of the body box 10 are folded. And an outer flap 1 connected to an outer face plate 12a forming a side wall 12 of the body box 10.
7, the outer plate 13a and the inner plate 13b forming the end wall 13 of the body box 10 are then folded. As shown in FIG. 5, the body box 10 and the lid box 30 are connected to each other. Assembled in the state. Side wall 12 of body box 10
In the case where the outer flap 17 is not connected to the outer plate 12a forming the hook, the hook portion 47 of the connecting flap 46 of the lid box 30 is connected to the side of the inner plate 12b of the body box 10. The hook box 30 can be connected to the body box 10 by hooking on the hook portion 15 of the inner flap 14.

By reversing the above assembling order, the assembled body box 10 and cover box 30 can be separated, and further, the body box 10 and cover box 30 can be developed into one piece of paperboard, respectively. it can.

[0033]

As described above, according to the present invention, the connection between the body box and the lid box which is openably and closably connected to the body box can be performed without bonding, so that assembly is possible. It has the effect of being easy and capable of being decomposed.

Further, on both sides of the upper part of the side wall formed so as to be able to be folded back of the lid box, insertion flaps to be inserted between the inner and outer plates of the end wall are formed. When a corner projection is formed in the upper corner part, and a notch part where the corner projection of the body box fits is formed in the top wall inner plate superimposed on the inner surface of the top wall of the lid box, the body box and the lid box Since the light-shielding property between them is good, it can be suitably used as a packaging box for photosensitive materials.

Further, as described above, regardless of the bonding,
Since the body box and lid box can be connected, the packaging box that has become unnecessary after use can be easily dismantled, making it suitable for recycling, and a synthetic resin adhesive for bonding. It is also an environmentally friendly packaging box that does not require any.

[Brief description of the drawings]

FIG. 1 is an exploded view of a body box according to the present invention.

FIG. 2 is a development view of the lid box according to the present invention.

FIG. 3 is a perspective view showing a process of assembling a body box and a lid box.

FIG. 4 is a perspective view showing a process of assembling a body box and a lid box.

FIG. 5 is a perspective view showing a state where the body box and the lid box are connected and the lid box is opened.

FIG. 6 is a perspective view showing a corner projection formed on the body box;

FIG. 7 is a cross-sectional view showing a corner projection formed on a body box;

FIG. 8 is a perspective view of a conventional example.

FIG. 9 is a perspective view showing a part of a conventional lid box.

FIG. 10 is a perspective view showing a part of a conventional body box.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Body box 11 Bottom wall 12 Side wall 12a Outer plate 12b Inner plate 13 End wall 13a Outer plate 13b Inner plate 14 Inner flap 15 Hook part 17 Outer flap 18 Hook part 19 Corner projection 30 Cover box 31 Top wall 32 Side wall 32a Outer plate 32b Inner plate 33 End wall 33a Outer plate 33b Inner plate 36 Notch 37 Lower half 38, 39 Fold line 45 Inner flap 46 Connecting flap 47 Hook 48 Insert flap

──────────────────────────────────────────────────続 き Continuation of the front page (56) References Japanese Utility Model Sho 63-137715 (JP, U) Japanese Utility Model Sho 55-1627 (JP, U) (58) Fields investigated (Int. Cl. ⁷ , DB name) B65D 5/26 B65D 81/30

Claims (3)

(57) [Claims] 1. A box having a pair of side walls and a pair of end walls formed on four sides of a rectangular bottom wall, and a pair of side walls and a pair of end walls formed on four sides of a rectangular top wall. A lid box to be put on the outer surface of the body box, and at least a lower half of one side wall of the lid box can be turned outward by a fold line crossing in the left-right direction, and a lower half of the side wall of the lid box is provided. In the packaging box, the end wall of the body box has a double-walled structure of an outer plate and an inner plate, and a body is provided on both sides of the side wall of the body box. A flap sandwiched between an inner plate and an outer plate forming an end wall of the box is provided.On both sides of an outwardly foldable lower half formed on the side wall of the lid box, the lid box is formed into a body box. A connecting flap inserted between an inner plate and an outer plate forming an end wall of the body box in a state in which the connecting flap is placed; A light-sensitive material packaging box, wherein a connecting means is formed at the tip of the body box and the tip of the flap of the body box. 2. The both end walls of the cover box have a double wall structure of an outer plate and an inner plate, and one of the side walls of the cover box has a lower half that can be folded outward. At the upper end of both sides of the lid box, an insertion flap to be inserted between the inner plate and the outer plate forming the end wall of the lid box is formed, and the end walls of the lid box are formed on both sides of the other side wall of the lid box. The photosensitive material packaging box according to claim 1, wherein a flap sandwiched between the inner surface plate and the outer surface plate is formed, and a cutout portion is formed in the flap so as to fit the insertion flap. 3. An upwardly projecting corner projection is formed at an upper edge of a side wall and an upper edge of an end wall of the body box, and a top wall inner plate is superimposed on an inner surface of a top wall of the lid box. 3. A photosensitive device according to claim 1, wherein a cutout portion is formed at a corner portion of the inner wall of the top wall so that the corner protrusion is fitted.
Material packaging box.